Test System

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Intel Processors (Socket 775)
Pentium 4 Processor 560 (3.6 GHz, 12-16/1024 kB)
Memory
DDR2-533 2x 512 MB PC4300 Crucial
Timings: CL 4.0-4-4-12
Voltage: 1.8 V
Common Hardware
Sound Card Terratec Aureon 7.1 Space
96.00 kHz sample rate
Graphics Card
PCIE		 NVIDIA Reference Card
GPU: NVIDIA Geforce 6800 Ultra, 400 MHz Chip Clock
Memory: 256 MB DDR-SDRAM, 550 MHz Chip Clock
Hard Drive (Intel System) Intel FW82801ER ICH6FR
2 x SATA Maxtor 7B250S00 (Raid 0)
250 GB / 16 MB Cache / 7200 rpm
DVD/CD-ROM MSI MS-8216D 16x DVD
Software
Intel Chipset Install Utility 6.0.1.1002
Intel RAID Drivers Application Accelerator 4.1.0.6325
Nvidia Graphic AGP and PCIE Detonator 61.45
VIA Chipset VIA Hyperion 4 in 1 V4.51
DirectX Version: 9b
OS Windows XP Professional, Build 2600 Service Pack 1

Overclocking: Only With Increased Northbridge Voltage


Overclocking the new Intel chipsets cannot be done in a snap. This is demonstrated by the fact that almost none of the manufacturers are able to operate their boards significantly above the normal 200 MHz. One of the key methods is to increase the supply voltage of the MCH chip. Both the 915P and the 925X work according to specification with 1.5 V (see above). The range from 1.425 to 1.575 V is within the tolerance. What the manufacturers presented to us for the test was in some cases higher than the Intel specification. The following table summarizes our measurement results:


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